Describe the incident with Sai Baba's cough and the 'evil eye' and what it taught Laxmichand.

During a Chavadi procession, Sai Baba developed a persistent cough. As Chapter 28 recounts, a devotee named Laxmichand, upon seeing this, had a fleeting thought that perhaps someone's "evil eye" had affected Baba, causing the cough. The next morning, when Laxmichand was in the masjid, Baba spoke to Madhavrao and said, "Yesterday I had much coughing; is this the effect of an evil eye?" By voicing Laxmichand's exact private thought, Baba demonstrated his omniscience. This left Laxmichand in wonder, confirming for him that Baba dwells in everyone's heart and is aware of their innermost thoughts, which led him to plead for Baba's continued grace and protection.